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Preparation method for porous carbon nanofiber dye-sensitized solar cell counter electrode material doped with sulfur-copper-indium nanocrystalline

A technology of solar cells and nanofibers, applied in the field of solar cells, can solve the problems of expensive platinum electrodes, and achieve the effects of permeation and rapid electron transmission, high photoelectric conversion efficiency, large specific surface area and porosity

Inactive Publication Date: 2015-12-09
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the platinum counter electrode is the most commonly used in dye-sensitized solar cells. Although the platinum electrode has many advantages and excellent performance, the price of the platinum electrode is too expensive, accounting for almost 60% of the entire battery cost.

Method used

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  • Preparation method for porous carbon nanofiber dye-sensitized solar cell counter electrode material doped with sulfur-copper-indium nanocrystalline
  • Preparation method for porous carbon nanofiber dye-sensitized solar cell counter electrode material doped with sulfur-copper-indium nanocrystalline

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Experimental program
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Effect test

Embodiment 1

[0021] A method for preparing a porous carbon nanofiber material doped with copper-sulfur-indium nanocrystals, comprising the following steps:

[0022] (1) Use a mixed solution of dimethylformamide and chloroform as the solvent, and the mass ratio of dimethylformamide and chloroform is 9:1. Add copper chloride (CuCl 2 ), indium chloride (InCl 3 ) and thiourea (CN 2 h 4 S), stirring at 40°C for 3h to obtain a copper-sulfur-indium precursor;

[0023] (2) Add polyacrylonitrile powder to the copper-sulfur-indium precursor solution obtained in step (1), and stir at 60° C. for 3 hours to obtain a spinning solution. The molecular weight of described polyacrylonitrile is 50000, and the massfraction of polyacrylonitrile is 5%;

[0024] (3) Electrospinning the spinning solution obtained in step (2) to obtain a nanofiber mat containing copper-sulfur-indium precursor, spinning voltage: 10kV, spinning temperature: 20°C, receiving distance: 10cm;

[0025] (4) Pre-oxidize the nanofiber...

Embodiment 2

[0029] A method for preparing a porous carbon nanofiber material doped with copper-sulfur-indium nanocrystals, comprising the following steps:

[0030] (1) Use a mixed solution of dimethylformamide and chloroform as the solvent, and the mass ratio of dimethylformamide and chloroform is 7:1. Add copper chloride (CuCl 2 ), indium chloride (InCl 3 ) and thiourea (CN 2 h 4 S), stirring at 60°C for 4h to obtain a copper-sulfur-indium precursor;

[0031] (2) Add polyacrylonitrile powder to the copper-sulfur-indium precursor solution obtained in step (1), and stir at 60° C. for 5 hours to obtain a spinning solution. The molecular weight of described polyacrylonitrile is 70000, and the massfraction of polyacrylonitrile is 10%;

[0032] (3) Electrospinning the spinning solution obtained in step (2) to obtain a nanofiber mat containing copper-sulfur-indium precursor, spinning process parameters: voltage: 15kV, temperature: 20°C, receiving distance: 15cm;

[0033] (4) Pre-oxidize t...

Embodiment 3

[0037] A method for preparing a porous carbon nanofiber material doped with copper-sulfur-indium nanocrystals, comprising the following steps:

[0038] (1) Use a mixed solution of dimethylformamide and chloroform as the solvent, and the mass ratio of dimethylformamide and chloroform is 6:1. Add copper chloride (CuCl 2 ), indium chloride (InCl 3 ) and thiourea (CN 2 h 4 S), stirring at 70°C for 5h to obtain a copper-sulfur-indium precursor;

[0039] (2) Add polyacrylonitrile powder to the copper-sulfur-indium precursor solution obtained in step (1), and stir at 70° C. for 4 hours to obtain a spinning solution. The molecular weight of described polyacrylonitrile is 100000, and the massfraction of polyacrylonitrile is 12%;

[0040] (3) Electrospinning the spinning solution obtained in step (2) to obtain a nanofiber mat containing copper-sulfur-indium precursor, spinning process parameters: voltage: 20kV, temperature: 25°C, receiving distance: 30cm;

[0041] (4) Pre-oxidize ...

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Abstract

The invention relates to a porous carbon nanofiber dye-sensitized solar cell counter electrode material doped with sulfur-copper-indium nanocrystalline, and a preparation method for the porous carbon nanofiber dye-sensitized solar cell counter electrode material doped with sulfur-copper-indium nanocrystalline. Through the electrostatic spinning of a blended solution of polyacrylonitrile and a sulfur-copper-indium precursor and the different volatilization speeds of a solution, the method obtains porous nanofibers, and the porous carbon nanofiber dye-sensitized solar cell counter electrode material doped with sulfur-copper-indium nanocrystalline is obtained through high-temperature carbonization. The material prepared through the method is extremely large in specific area, and facilitates the penetration of electrolyte and transmission of electrons. The sulfur-copper-indium nanocrystalline on the fibers provides more catalytic activity points for the redox reaction of an electrolysis pair. The material is simple in manufacturing technology, is low in cost, is environment-friendly, can serve as an effective counter electrode material for a dye-sensitized solar cell, and is good in application prospect.

Description

technical field [0001] The invention belongs to the field of solar cells, and relates to a porous carbon nanofiber electrode material loaded with copper-sulfur-indium nanocrystals and a preparation method thereof. In particular, it relates to a preparation method applicable to a counter electrode of a dye-sensitized solar cell. Background technique [0002] With the continuous development of the world economy, the demand for energy in human society is increasing, and the geological reserves of non-renewable fossil energy such as petroleum and coal are gradually depleted, and the environmental problems brought about by it are also becoming more and more apparent. Therefore, the development of new energy has become an important issue to be solved in the sustainable development of mankind. Among all kinds of renewable energy, solar energy is favored because of its abundant resources, green and clean, low utilization cost and not limited by geographical conditions. Since the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/042H01G9/20D01F9/22D01F1/10
CPCY02E10/542
Inventor 何建新王利丹周梦娟杨勇谭卫琳韩啟明连艳平丁彬崔世忠
Owner ZHONGYUAN ENGINEERING COLLEGE
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